kmscube: move to the new repository
As announced by Rob Clark at:
https://lists.freedesktop.org/archives/mesa-dev/2017-February/145745.html
, the kmscube repository has been moved from github to freedesktop.org,
so change it to the new location.
With the newest code the local patch for adding imx-drm support
is no longer needed.
Also, on imx6q we need to explicitily pass the card device now:
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>